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package commit
import (
"bytes"
"errors"
"fmt"
objectheader "codeberg.org/lindenii/furgit/object/header"
objecttype "codeberg.org/lindenii/furgit/object/type"
)
// BytesWithoutHeader renders the raw commit body bytes.
func (commit *Commit) BytesWithoutHeader() ([]byte, error) {
var buf bytes.Buffer
if commit.Tree.Algorithm().Size() == 0 {
return nil, errors.New("object: commit: missing tree id")
}
fmt.Fprintf(&buf, "tree %s\n", commit.Tree.String())
for _, parent := range commit.Parents {
fmt.Fprintf(&buf, "parent %s\n", parent.String())
}
authorBytes, err := commit.Author.Serialize()
if err != nil {
return nil, err
}
buf.WriteString("author ")
buf.Write(authorBytes)
buf.WriteByte('\n')
committerBytes, err := commit.Committer.Serialize()
if err != nil {
return nil, err
}
buf.WriteString("committer ")
buf.Write(committerBytes)
buf.WriteByte('\n')
if commit.ChangeID != "" {
buf.WriteString("change-id ")
buf.WriteString(commit.ChangeID)
buf.WriteByte('\n')
}
for _, h := range commit.ExtraHeaders {
if h.Key == "" {
return nil, errors.New("object: commit: extra header has empty key")
}
buf.WriteString(h.Key)
buf.WriteByte(' ')
buf.Write(h.Value)
buf.WriteByte('\n')
}
buf.WriteByte('\n')
buf.Write(commit.Message)
return buf.Bytes(), nil
}
// BytesWithHeader renders the raw object (header + body).
func (commit *Commit) BytesWithHeader() ([]byte, error) {
body, err := commit.BytesWithoutHeader()
if err != nil {
return nil, err
}
header, ok := objectheader.Encode(objecttype.TypeCommit, int64(len(body)))
if !ok {
return nil, errors.New("object: commit: failed to encode object header")
}
raw := make([]byte, len(header)+len(body))
copy(raw, header)
copy(raw[len(header):], body)
return raw, nil
}
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